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any way to set AM_CPPFLAGS for all subdirs at one time?

From: Ed Hartnett
Subject: any way to set AM_CPPFLAGS for all subdirs at one time?
Date: Thu, 23 Nov 2006 08:15:17 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.4 (gnu/linux)

Howdy all!

In my build, I allow the user to specify a location for a library, in
case they have built the library but not installed it in /usr/lib, or
some other place the loader checks automatically. The library is
called HDF5, and the configure script allows them to do something

./configure --with-hdf5=/some/dir

Then in each of my subdirs, I have the following in my

# If the user specified a root for HDF5, use it.
AM_CPPFLAGS += address@hidden@/include
AM_LDFLAGS = address@hidden@/lib

Is there a way to do this in one place for all subdirs? Or must this
be done in each directory's

Is there some more automakeish way to handle this situation?

Thanks and Happy Thanksgiving to all U.S.A. readers!


Ed Hartnett  -- address@hidden

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